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Zonation On A Rocky Shore - 2,272 words
... a problem. The turbidity or cloudiness of
seawater (due to plankton, sewage and other
detritus) can affect the intensity of light
reaching submerged seaweeds. Another factor is the
seepage of freshwater onto the shore. Many
seaweeds cannot tolerate salinity changes, so
other species that can tolerate such changes will
inhabit these areas. The biotic factors that
affect the rocky shore tend to affect the lower
limits at which a species may live. The biotic
factors that affect the distribution of organisms
on the rocky shore are: Food supply: All organisms
need food to survive and so can only flourish in
areas in which they can find food. Many species
that are found on the seashore left t ...
Related: rocky, shore, food supply, factors affecting, significance

Zonation On Rocky Shore - 2,235 words
Zonation On Rocky Shore The seashore is a habitat
that contains a wide range of microhabitats and
ecological niches for different creatures. This is
mainly due to the effects of the tides, that rise
and fall twice each day. Tides are the vertical
movement of water in a periodical oscillation of
the sea, due to the gravitational pull of the sun
and moon. The tides are on a semi-diurnal cycle,
so there are two high tides and two low tides each
day. Due to the orbit of the moon, the tides also
have a monthly cycle. This creates neap (very low)
and spring (very high) tides. The seashore can be
divided into several zones, which are illustrated
on the diagram below: Key: EHWS = Extreme High
Water ...
Related: rocky, shore, adult life, sea anemones, environmental